Lock



June 10 1924.

H. SAKALIAN LOCK Filed July 1,

2 Sheets-Sheet 1 A TTOR/VEY H. SAKALJAN Jame 10 1924.

LOCK

Filed July I 1922 2 Sheets-Sheet 2 A TTOR/V Y u 9 a. \I J i 6 Patented June 10, 1924.

BIOVAGIII SAKALIAN, OF NEN' YORK. H. Y.

noon.

Application filed July 1, 1922.

To all whom it may concern:

Be it known that I, I'IOYAGIN SAKALIAN. a citizen of the United States, and a resident of the borough of Manhattan in the city, county, and State of New York, have invented a new and useful Lock, of which the following is a specification. I I v My invention is an improvement in looks, and is particularly an improvement in that class of locks which are applied to the inner face of apartment or house doors for special protection against forcing. The object is to provide a lock of simple and strong con struction, practically jimmy-proof, and requiring a minimum amount of cutting of the door and jamb.

In the accompanying drawings, forming a part hereof: I

Fig. 1 is an inside elevation of a portion of the door and door jamb, the door being closed 5 I 2 is a horizontal section through the door and jamb, the lock andkeeper being in plan and the bolt shown projected;

Fig. 3 is a vertical section on the broken section line 3-3 of Fig. 2; I

Fig. 4 is an inner face view of the lock, with the innercover removed, showing the keeper in section, and the bolt projected;

Fig. 5 is a similar view, showing the bolt retractedg I Fig. 6 is a vertical transverse section on the line6-6 of Fig. 4; and I Fig. 7 is a horizontal section on the line 77 of Fig. 1, showing the bolt projected.

The lock has a case 1, which is applied to the inner face of the door 2 by bolts 3, 3 and 4, i. A removable wall or cover 5 is on the inner side of the case, next the door. Inthe case is a bolt 6, consisting of twin upper and lower portions and a uniting rear portion 7. The upper rear limb of the bolt has a notch 8. The limbsot the bolt are guided in the interior of the case by a wall 39 having suit-' able openings or'notches.

A knob 9 has a stem 10 rotatably mounted in the outer wall of the lock case, On the inner end of this stem is a double bit 11 to co-operate with the notch 8, so as to project and retract the bolt. A spring 12 in the case, pressing upon flat shoulders connected with the stem of theknob serves to hold the same in one position or the other.

A detent 13 overlies the upper rear limb of the bolt, being pivoted at its forward end on a screw 14 in the case, and pressed down Serial 1'10. 5?'2,22f?.

. ward'by a spring 15. Said detent is prefout of holding engagement with the bolt by either the bit 11 or the bit 18 preparatory to the actuation of the bolt. The hits, it will be observed, lie within the twin-bolt structure which is united by the portion 7 at the rear end, and the construction and relations are such that there is a very direct thrust on the bolt without any tendency toward binding. 7

' The case has an integral extension 20 to overlap the door-jamb 21, thisextension' comprising a wall 22 spacedfrom the end of the wall 23 of the lock case and joined theretoby top and bottom portions 24,25. In the end'wall 28 of the case and the far wall 22 of the extension are alined-openings 26, 27' for the passage of the bolt. I

' keeper 28 is secured to the inner surface of the door jamb. that is to say.-. the surface which is opposed tothe edge of the door,

by screws 29, and isfurther secured to the jamb by a right-angular, laterally projecting flange30. overlying the face of the j amb. that is to say the side facing the interior of the apartment. this flange having openings for screws 31. The keeper has an inwardly projecting lip 32 which is received with suitable slight clearance between the spaced walls 22 and of the lock case, when, the door is closed. This tongue, like said walls, is formed with twin openings, to permit the passage of the two members of the bolt. Said bolt members when projected extend through the wall 22 ofthe extensiomas seen in Fig. 7, and are guarded by vertical edge flanges 33, 34 on said wall, forming a channel wherein the bolt ends are enclosed, the 105 extension wall of the lock case being strengthened by these flanges so as to be rigid against prying.

The face flange 30 ofthe keeper is extended at 3O above and below the inner flange 28, and it is in these extensions that the screw holes for the screws 31 are provided. This is important because it is necessary or preferable to cut away the inner surface of the door-jamb so as to receive the flange 28 flush therewith, as shown in Figs. 2 and 7. By extending the portions 30 of the face flange beyond the upper and lower ends of the flange 28, and therefore beyond the cut-out which is made in the inner sur face of the door-jamb, the screws 30*, upon which heavy strain would fall in event of jimmying, are held in parts of the door-jamb which have not been reduced in, thickness. In modern apartments thewood of the door jamb is usually encased in metal trim, and since the sheet-iron of such trim will not be cut away above or below the flange 28, the wood of the door-jainb at the regions which receive'the screws 31 will be reinforced by such sheathing.

The flange 30, it will be observed, is applied to the outside of the face of the doorjamb, that is to say it is not sunk in by cutting a seat in this face, or cutting away the sheathing in the ease of metal trim. This is of advantage both in applying the lock and for the purpose 'of retaining maximum strength. To this end the peripheral wall 1 of the lock case is extended rearwardly from the back wall 5 of the case in a deep flange 1 proportioned so that the bolts 6 will be spaced from the face of the door to lie in a plane which enables them to register with the bolt-openings in the keeper lip 32 with the keeper applied to the door-jamb in the manner described.

The lock case is secured to the door by pairs of screws 3 and e as stated. At the forward end the outer wall of the case is thickened at 37, ,to resist strain upon the screws 4, this portion of the outer wall, the end wall 23, and the spaced extension wall 22 with the connecting elements, being of stout construction, as distinguished from the remainder of the case, which is not called upon'to withstand substantial strain. The case is preferably formed at the forward end with a flange 38 projecting rearwardly from the wall 23, this flange being let into the edge corner of the door when the lock is applied. I

What is claimed as new is:

1. A look comprising a casing adapted to be applied to the face of a door and having an extension adapted to overlap the doorframe, with a bolt in the casing adapted to be projected across into the extension, in

combination with a keeper having two flanges at right angles to each other to be applied respectively to the face and inner surface of the door-jamb, and a lip having a bolt-opening and projecting at right angles to the face flange to be received between the lock casing and its extension, said keeper flanges having screw-openings and the face flange being extended above and below the inner flange and having its screw openings in said extensions, so that the screws which secure the keeper to the face of the door-jainb are set into regions which have not been cut away at the side for the inner flange of the keeper.

2. A lock comprising a casing adapted to be applied to the face of a door and having an extension adapted to overlap the doorframe, with a bolt in the casing adapted to be projected across into the extension, in combination with a keeper having two flanges at right angles to each other to be applied respectively to the face and inner surface of the door-jamb, and a lip having a bolt-opening and projecting at right angles to the face flange to be received between the lock casing and its extension, said keeper flanges having screw-openings and the face flange being extended above and below the inner flange and having its screw openings in said extensions, the lock case having means setting it out from the door ,to such extent that the face flange of the keeper is'applicable to the outside of the face of the door-jamb without setting in.

3. A door lock, comprising a lock case to be applied to the inner face of the door, said case having an extension beyond its end wall to overlap the door-jamb, said exten sion comprising a far wall spaced from the end wall of the case, and members uniting said walls, said end wall and far wall having alined bolt openings, a keeper to be applied to the door-jamb having a tongue to project between said end and far walls of the lock case and containing an alined bolt opening, and lock mechanism comprising a bolt in the lock case to be projected through the end wall of the case and the tongue of the keeper and through the opening of the far wall of the extension, the far wall of the extension having vertical edge flanges stiffening the wall and forming a channel to guard the end of the bolt.

HOVAGIN SAKALIAN 

